Alert archive / Texas / Mesoscale Discussions in 2017

Mesoscale Discussion 1136

June 23, 201710 counties in New Mexico; 16 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 23, 2017, 2:15 PM MDT for 10 counties in New Mexico; 16 counties in Texas. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Jun 23, 2017, 2:15 PM MDT (20:15 UTC)
Expired: Jun 23, 2017, 4:45 PM MDT
In force: 3 hr
Issued by: the Storm Prediction Center
Chance of a watch: 5%

All 26 counties

Chaves County, NM, Eddy County, NM, Guadalupe County, NM, Lea County, NM, Lincoln County, NM, Mora County, NM, Otero County, NM, San Miguel County, NM, Santa Fe County, NM, Torrance County, NM, Andrews County, TX, Borden County, TX, Dawson County, TX, Fisher County, TX, Gaines County, TX, Garza County, TX, Howard County, TX, Kent County, TX, Loving County, TX, Lynn County, TX, Martin County, TX, Mitchell County, TX, Scurry County, TX, Stonewall County, TX, Terry County, TX, Yoakum County, TX

The radar

The Cannon AFB radar (KFDX), 83 km from the middle of the area, began a volume at 20:18 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 8.3 hours before the alert went out and 252 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 653 J/kg
Mixed-layer CIN: -379 J/kg
Mixed-layer LCL: 2522 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: -23 m²/s²
0-3 km storm-relative helicity: 35 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 23, 2:32 PM MDT	Mesoscale Discussion	SPC	Collin, Cooke, Dallas, Delta, Denton, Fannin and 14 more	118 min

Nearby

Mesoscale Discussions in Texas, 2017 Mesoscale Discussions in New Mexico, 2017 Every mesoscale discussion in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.